Run a noads DNS on the phone, either libredns or mullvaddns, neither outlook or Gmail will show ads.

In fact you won’t have any ads period.

I’m running sonarr, radarr, prowlarr, jellyseer, jellyfin and craftycontroller (minecraft server) all running on CasaOS on Ubuntu server. I also have Twingate connector installed on the host to allow secure access from outside the home.

I have a home media server (which may or may not host an arr stack) running on a 5 year old i5 NUC withb16Gb RAM and two USB external SSDs for storage.

So far it manages for the household (3 users) perfectly fine.

You generally don’t need sudo to install flatpaks and actually pretty sure they advise against it.